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3 years ago

WILL MARK BRAINLIEST!!!! Help answer this question!!!! No Need for explanation!!!

Mathematics

1 answer:

hichkok12 [17]3 years ago

4 0

Answer:

The correct answer would be 6!

Step-by-step explanation:

I did the practice test yesterday and this one of the questions!

Hope this Helps!!!

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OK so I was going through work and I come across this question <br> 3/4 x 4/7<br> do you know it?

mezya [45]

Yes i do, the answer is 0.42

6 0

3 years ago

Help fast

NemiM [27]

Answer:

h = 3V / lw <===ANSWER

Step-by-step explanation:

V = 1/3 lwh (multiply both sides by 3)

3V = lwh (divide both sides by lw)

3V / lw = h

7 0

3 years ago

Solve Angle B please

kvv77 [185]

Answer:

x = 9

Angle B = 40°

Step-by-step explanation:

Angle A = Angle B

$5x-5=3x+13$

$5x-3x=13+5$

$2x=18$

$x=18/2=9$

Angle B = 3x + 13 = 3(9) + 13 = 27 +13 = 40°

Hope this helps

3 0

3 years ago

Use the chain rule to find dw/dt. w = ln x2 + y2 + z2 , x = 7 sin(t), y = 9 cos(t), z = 6 tan(t)

DENIUS [597]

By the chain rule,

$\dfrac{\mathrm dw}{\mathrm dt}=\dfrac{\partial w}{\partial x}\dfrac{\mathrm dx}{\mathrm dt}+\dfrac{\partial w}{\partial y}\dfrac{\mathrm dy}{\mathrm dt}+\dfrac{\partial w}{\partial z}\dfrac{\mathrm dz}{\mathrm dt}$

We have

$\dfrac{\partial w}{\partial x}=\dfrac{2x}{x^2+y^2+z^2}$
$\dfrac{\partial w}{\partial y}=\dfrac{2y}{x^2+y^2+z^2}$
$\dfrac{\partial w}{\partial z}=\dfrac{2z}{x^2+y^2+z^2}$

$\dfrac{\mathrm dx}{\mathrm dt}=7\cos t$
$\dfrac{\mathrm dy}{\mathrm dt}=-9\sin t$
$\dfrac{\mathrm dz}{\mathrm dt}=6\sec^2t$

So we have

$\dfrac{\mathrm dw}{\mathrm dt}=\dfrac2{x^2+y^2+z^2}\left(7x\cos t-9y\sin t+6z\sec^2t\right)$
$\dfrac{\mathrm dw}{\mathrm dt}=\dfrac{2\left(49\sin t\cos t-81\cos t\sin t+36\tan t\sec^2t\right)}{49\sin^2t+81\cos^2t+36\tan^2t}$
$\dfrac{\mathrm dw}{\mathrm dt}=\dfrac{8\sin t(9-16\cos^4t)}{\cos t(36+13\cos^2t+32\cos^4t)}$

3 0

4 years ago

Use pictures and Numbers to show all the ways to take apart 8

Nastasia [14]

2+2+2+2 2×4 8×1 8 4×2

3 0

3 years ago